Connecting structure and bridging device

Abstract

The utility model relates to the technical field of bridging devices, in particular to a connecting structure and a bridging device, which comprise a connecting unit, the connecting unit comprises a cover ring, a main shaft, a volute spiral spring and an elastic component, the cover ring is movably connected with the main shaft, the volute spiral spring is arranged on the cover ring, the elastic component is arranged on the main shaft, and the elastic component is arranged on the main shaft. The connecting unit is arranged in the jumper, the jumper comprises a first shell, a second shell, a sealing frame and a guide plate, the sealing frame is arranged between the first shell and the second shell, and the first shell and the second shell are connected through the guide plate. The connecting structure has the advantages that under the normal condition of the connecting structure, the telescopic head makes contact with the arc-shaped protruding strips, the arc-shaped protruding strips have a certain length and are symmetrically arranged, thermal expansion materials are arranged in the barrel body, when the thermal expansion materials are heated, the extending distance of the telescopic head is increased, and when the thermal expansion materials are overheated, the telescopic head stretches into the arc-shaped groove and makes contact with the protruding shaft; and the connection is quickly disconnected.

Description

Technical Field

[0001] The utility model relates to the technical field of jumpers, in particular to a connection structure and a jumper device. Background Art

[0002] CROWBAR is translated as jumper. In the field of excitation, it refers to a device that uses a power electronic component to connect a resistor across the generator rotor circuit to demagnetize or limit rotor overvoltage. When designing and applying the jumper, short circuit conditions need to be considered. Since short circuits can cause a sharp increase in current, a large amount of heat may be generated. The jumper should have a thermal protection function. When the temperature exceeds the safety threshold, it can automatically disconnect the circuit to prevent damage to the equipment due to overheating. Therefore, a connection structure is required to offset when the equipment overheats, so as to quickly disconnect and protect the equipment. In addition, the jumper needs to have a certain mechanical strength during the disconnection process. Utility Model Content

[0003] In view of the above-mentioned technical problem that when the current increases sharply, overheating may cause damage to the equipment, the present utility model is proposed.

[0004] The utility model aims to provide a connection structure, which aims to solve the problem of automatic disconnection when the equipment is overheated.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a connecting structure, which includes a connecting unit, the connecting unit includes a cover ring, a main shaft, a volute spring and an elastic component, the cover ring is movably connected to the main shaft, the volute spring is arranged on the main shaft, and the elastic component is arranged on the main shaft.

[0006] As a preferred solution of the connection structure of the utility model, wherein: the cover ring includes a rotating through limit groove, a groove, a first limit ring and a ring platform, the groove is arranged on the top side of the cover ring, the through limit groove is symmetrically arranged on the side of the groove, the first limit ring is arranged on the other side of the cover ring, the ring platform is arranged on the opposite side of the groove, and the spiral spring is arranged in the groove.

[0007] As a preferred solution of the connection structure of the present invention, the main shaft includes an inclined hole, a connecting head and a tapered receiving cavity, the connecting head is arranged at one end of the main shaft, the tapered receiving cavity is arranged at the other end of the main shaft, the inclined hole is arranged on the side of the main shaft close to the connecting head, and the inclined holes are symmetrically arranged.

[0008] As a preferred solution of the connection structure of the utility model, the elastic component includes an elastic part, a barrel body and a telescopic head, one end of the elastic part is arranged in the inclined hole, the other end of the elastic part is arranged on the barrel body, the telescopic head is arranged in the barrel body, and a thermal expansion material is also arranged in the barrel body.

[0009] As a preferred solution of the connection structure of the utility model, a limit block is provided at one end of the barrel body, a connection hole is provided at the other end of the barrel body, and the telescopic head partially extends out of the barrel body through the connection hole.

[0010] As a preferred solution of the connection structure of the present invention, the cover ring further comprises an arcuate ridge and an arcuate groove, the arcuate ridge is arranged on the inner side wall of the cover ring, and the arcuate ridge is movably connected to the telescopic head.

[0011] As a preferred solution of the connection structure of the present invention, the arc-shaped convex strip includes a convex portion and concave portions arranged on both sides, and the arc-shaped convex strip is symmetrically arranged on the inner side wall of the cover ring.

[0012] As a preferred solution of the connection structure of the present invention, the arc-shaped groove includes a convex shaft, the convex shaft is arranged in the arc-shaped groove, the arc-shaped groove is arranged perpendicular to the arc-shaped convex strip, and the arc-shaped groove is arranged between the symmetrically arranged arc-shaped convex strips.

[0013] The beneficial effects of the connection structure of the present invention are as follows: under normal circumstances, the telescopic head contacts the arc-shaped convex strips, the arc-shaped convex strips have a certain length and are symmetrically arranged, and a thermal expansion material is arranged in the barrel body. When the thermal expansion material is heated, the extension distance of the telescopic head increases. When overheated, the telescopic head extends into the arc-shaped groove and contacts the convex shaft, thereby quickly disconnecting the connection.

[0014] Another object of the present invention is to provide a jumper device, which aims to solve the problem of automatic disconnection when the jumper is overheated and has better mechanical stability.

[0015] To solve the above technical problems, the present invention also provides the following technical solutions: a jumper device, comprising a connection structure; and a jumper, wherein the connection unit is arranged in the jumper, and the jumper comprises a first shell, a second shell, a sealing frame and a guide plate, the sealing frame is arranged between the first shell and the second shell, and the first shell and the second shell are connected by the guide plate.

[0016] As a preferred solution of the jumper device of the present invention, the first shell includes a connecting ring groove and a second limiting ring, the connecting ring groove is arranged on the inner top wall of the first shell, the connecting head is slidably connected to the connecting ring groove, the second limiting ring is arranged on the bottom side of the first shell, and the main shaft is arranged in the first shell.

[0017] The beneficial effects of the jumper device of the present invention are as follows: the main shaft is arranged in the first shell and the second shell, the connecting head is slidably connected to the connecting ring groove, when the connecting structure rotates, the connecting head is disengaged from the guide piece in the connecting ring groove, and the cover ring setting makes the connecting structure have better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0019] Figure 1 This is an overall display diagram of the connection structure in the utility model.

[0020] Figure 2 It is a partially enlarged bottom view of the connection structure in the present invention.

[0021] Figure 3 It is a cross-sectional view of the connection structure in the present utility model.

[0022] Figure 4 This is a diagram showing the cover ring structure in the present utility model.

[0023] Figure 5 This is a partial enlarged view of the cover ring in the present invention.

[0024] Figure 6 It is a partial enlarged view of the arc-shaped convex strips and arc-shaped grooves in the present utility model.

[0025] Figure 7 This is a diagram showing the main shaft structure in the present utility model.

[0026] Figure 8 This is a diagram showing the jumper structure in the present invention.

[0027] Figure 9 It is a cross-sectional view of the jumper in the present utility model. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it designate a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1 , which is the first embodiment of the present utility model, provides a connection structure, including a connection unit 100 , the connection unit 100 includes a cover ring 101 , a main shaft 102 , a volute spring 103 and an elastic component 104 .

[0033] Preferably, the connecting unit 100 includes a cover ring 101, a main shaft 102, a spiral spring 103 and an elastic component 104. The cover ring 101 is rotatably connected to the main shaft 102. The spiral spring 103 is arranged on the main shaft 102. The spiral spring 103 is the existing technology. The spiral spring 103 facilitates the reset of the main shaft 102 after rotation. The elastic component 104 is arranged on the main shaft 102.

[0034] During use, the cover ring 101 is rotatably connected to the main shaft 102. When the elastic component 104 is heated, the thermal expansion material set therein pushes the elastic component 104 to expand and contract, and causes the main shaft 102 to deflect. When the thermal expansion material contracts, the spiral spring 103 set on the main shaft 102 resets the main shaft 102.

[0035] Example 2

[0036] Reference Figures 1 to 7 , which is the second embodiment of the present utility model. Different from the previous embodiment, it further includes a cover ring 101 including a rotation through-limiting groove 101a, a groove 101b, a first limiting ring 101c and a ring platform 101d. The groove 101b is arranged on the top side of the cover ring 101, and the through-limiting groove 101a is symmetrically arranged on the side of the groove 101b. The connector 102b moves in the through-limiting groove 101a, the first limiting ring 101c is arranged on the other side of the cover ring 101, and the ring platform 101d is arranged on the opposite side of the groove 101b. The elastic component 104 rotates in the limiting space constituted by the first limiting ring 101c and the ring platform 101d, and the spiral spring 103 is arranged in the groove 101b.

[0037] Preferably, the main shaft 102 includes an inclined hole 102a, a connector 102b and a conical receiving cavity 102c. The connector 102b is arranged at one end of the main shaft 102, and the connector 102b is connected to the guide plate in the jumper housing. The conical receiving cavity 102c is arranged at the other end of the main shaft 102. The conical receiving cavity 102c is used to accommodate the jumper wire. The inclined hole 102a is arranged on the side of the main shaft 102 close to the connector 102b. The inclined holes 102a are symmetrically arranged. The arrangement of the inclined hole 102a makes it easier for the main shaft 102 to deflect when the elastic component 104 is extended or retracted.

[0038] Preferably, the elastic component 104 includes an elastic member 104a, a barrel body 104b and a telescopic head 104c, one end of the elastic member 104a is arranged in the inclined hole 102a, and the other end of the elastic member 104a is arranged on the barrel body 104b, and the telescopic head 104c is arranged in the barrel body 104b. A thermal expansion material is also arranged in the barrel body 104b, and the heat generated by the material when the current increases is used to drive the mechanical components to move. An elastic member is arranged on the telescopic head 104c to facilitate the retraction of the telescopic head 104c after the thermal expansion material cools down.

[0039] Furthermore, a limit block 104b-1 is provided at one end of the barrel body 104b, and the limit block 104b-1 can conduct heat. A connecting hole 104b-2 is provided at the other end of the barrel body 104b, and the telescopic head 104c partially extends out of the barrel body 104b through the connecting hole 104b-2.

[0040] Preferably, the cover ring 101 further includes an arcuate ridge 101e and an arcuate groove 101f. The arcuate ridge 101e is arranged on the inner wall of the cover ring 101 and is located in the limiting space formed by the first limiting ring 101c and the ring platform 101d. The arcuate ridge 101e is movably connected to the telescopic head 104c.

[0041] Furthermore, the arc-shaped ridge 101e includes a convex portion 101e-1 and concave portions 101e-2 arranged on both sides. The arc-shaped ridge 101e is symmetrically arranged on the inner wall of the cover ring 101. The length of the convex portion 101e-1 extending out of the side wall is greater than that of the concave portion 101e-2. The arc-shaped ridge 101e has a certain length.

[0042] Furthermore, the arc-shaped groove 101f includes a convex shaft 101f-1, the convex shaft 101f-1 is arranged in the arc-shaped groove 101f, the arc-shaped groove 101f is arranged perpendicular to the arc-shaped convex strips 101e, and the arc-shaped groove 101f is arranged between the symmetrically arranged arc-shaped convex strips 101e.

[0043] During use, the cover ring 101 is rotatably connected to the main shaft 102, and a thermal expansion material is arranged in the barrel body 104b. The heat generated when the current increases drives the telescopic head 104c to extend outward, and the telescopic head 104c deflects from the convex part 101e-1 to the concave part 101e-2 on the arc-shaped ridge 101e protruding in the middle until the telescopic head 104c falls into the arc-shaped groove 101f and contacts the convex shaft 101f-1, thereby quickly disconnecting the device. At this time, the rotation of the main shaft 102 drives the connecting heads 102b symmetrically arranged on both sides of the groove 101b to rotate. When the temperature of the thermal expansion material drops, the volute spring 103 resets the telescopic head 104c from the arc-shaped groove 101f and connects to the arc-shaped ridge 101e.

[0044] Example 3

[0045] Reference Figures 1 to 9 This is the third embodiment of the present invention, which further provides a jumper device. The jumper device includes a jumper 200, in which the connection unit 100 is disposed. The jumper 200 includes a first housing 201, a second housing 202, a sealing frame 203, and a guide plate 204. The sealing frame 203 is disposed between the first housing 201 and the second housing 202. The first housing 201 and the second housing 202 are connected by the guide plate 204.

[0046] Preferably, the first shell 201 includes a connecting ring groove 201a and a second limiting ring 201b, the connecting ring groove 201a is arranged on the inner top wall of the first shell 201, the connecting head 102b is slidingly connected to the connecting ring groove 201a, and a guide plate is arranged in the connecting ring groove 201a. When the volute spring 103 is reset, the connecting head 102b contacts the connecting ring groove 201a, and after the main shaft 102 rotates, the connecting head 102b is disengaged from the guide plate, and the second limiting ring 201b is arranged on the bottom side of the first shell 201, and the main shaft 102 is arranged in the first shell 201.

[0047] When in use, the main shaft 102 is set in the first shell 201, the cover ring 101 is rotatably connected to the main shaft 102, and a thermal expansion material is set in the barrel 104b. When the current increases, the heat generated drives the telescopic head 104c to extend outward. The telescopic head 104c deflects from the convex part 101e-1 to the concave part 101e-2 on the arc-shaped convex strip 101e in the middle until the telescopic head 104c falls into the arc groove 101f and contacts the convex shaft 101f-1, thereby quickly disconnecting the device. The rotation of the main shaft 102 drives the connectors 102b symmetrically arranged on both sides of the groove 101b to rotate. The arc-shaped ridges 101e have a certain length. The jumper can operate normally within a certain range of the heat of the thermal expansion material. Only when the device overheats, the main shaft 102 rotates to disengage the connector 102b from the guide plate, thereby quickly disconnecting the jumper. When the temperature of the thermal expansion material drops, the spiral spring 103 resets the expansion head 104c from the arc-shaped groove 101f and connects to the arc-shaped ridge 101e.

[0048] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete elements can be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0049] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0050] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A connection structure, characterized in that: include, A connecting unit (100) includes a cover ring (101), a main shaft (102), a volute spring (103) and an elastic component (104); the cover ring (101) is movably connected to the main shaft (102); the volute spring (103) is arranged on the main shaft (102); and the elastic component (104) is arranged on the main shaft (102).

2. The connection structure according to claim 1, wherein: The cover ring (101) comprises a rotational through-limiting groove (101a), a groove (101b), a first limiting ring (101c) and a ring platform (101d), wherein the groove (101b) is arranged on the top side of the cover ring (101), the through-limiting groove (101a) is symmetrically arranged on the side of the groove (101b), the first limiting ring (101c) is arranged on the other side of the cover ring (101), the ring platform (101d) is arranged on the opposite side of the groove (101b), and the volute spring (103) is arranged in the groove (101b).

3. The connection structure according to claim 2, wherein: The main shaft (102) comprises an inclined hole (102a), a connector (102b) and a tapered receiving cavity (102c); the connector (102b) is arranged at one end of the main shaft (102); the tapered receiving cavity (102c) is arranged at the other end of the main shaft (102); the inclined hole (102a) is arranged on a side of the main shaft (102) close to the connector (102b); and the inclined holes (102a) are symmetrically arranged.

4. The connection structure according to claim 1 or 3, characterized in that: The elastic component (104) comprises an elastic member (104a), a barrel (104b) and a telescopic head (104c); one end of the elastic member (104a) is arranged in the inclined hole (102a); the other end of the elastic member (104a) is arranged on the barrel (104b); the telescopic head (104c) is arranged in the barrel (104b); and a thermal expansion material is also arranged in the barrel (104b).

5. The connection structure according to claim 4, wherein: A limiting block (104b-1) is provided at one end of the barrel body (104b), a connecting hole (104b-2) is provided at the other end of the barrel body (104b), and the telescopic head (104c) partially extends out of the barrel body (104b) through the connecting hole (104b-2).

6. The connection structure according to claim 5, wherein: The cover ring (101) further comprises an arcuate ridge (101e) and an arcuate groove (101f); the arcuate ridge (101e) is arranged on the inner side wall of the cover ring (101); and the arcuate ridge (101e) is movably connected to the telescopic head (104c).

7. The connection structure according to claim 6, wherein: The arc-shaped convex strip (101e) comprises a convex portion (101e-1) and concave portions (101e-2) arranged on both sides, and the arc-shaped convex strip (101e) is symmetrically arranged on the inner side wall of the cover ring (101).

8. The connection structure according to claim 7, wherein: The arc-shaped groove (101f) comprises a convex shaft (101f-1), the convex shaft (101f-1) is arranged in the arc-shaped groove (101f), the arc-shaped groove (101f) is arranged perpendicular to the arc-shaped convex strips (101e), and the arc-shaped groove (101f) is arranged between the symmetrically arranged arc-shaped convex strips (101e).

9. A jumper device, characterized in that: comprising the connection structure according to any one of claims 1 to 8; and A jumper (200), wherein the connection unit (100) is arranged in the jumper (200), and the jumper (200) comprises a first shell (201), a second shell (202), a sealing frame (203) and a guide plate (204), wherein the sealing frame (203) is arranged between the first shell (201) and the second shell (202), and the first shell (201) and the second shell (202) are connected via the guide plate (204).

10. The jumper device according to claim 9, wherein: The first shell (201) comprises a connecting ring groove (201a) and a second limiting ring (201b), wherein the connecting ring groove (201a) is arranged on the inner top wall of the first shell (201), the connecting head (102b) is slidably connected to the connecting ring groove (201a), the second limiting ring (201b) is arranged on the bottom side of the first shell (201), and the main shaft (102) is arranged in the first shell (201).

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